Holdee foe incandescent electeic lamps



(N0 Model.)

A. SWAN.

HOLDER FOR INANDESGBNT ELBGTRI LAMPS.

No, 313,965I Patented Mar. 17,-1885. x'

l 5 onTyne England, have invented certain Iin- 5o split screws d d, between which the main UNi'rsyH-TATES,

.Hlr ATENT esteis..

HOLDER roRfi'NcANDi-:VSCENT eti-:orme Lames.

SPECIFICATION forming partof Letters'Patent No. 313,965, dated March 17, 1885.

Application filed December 2i?, 1884. (No modul.) Patented in England Jnuo 11i, N84, No. 0.1 5.

.To ZZ whom it 711,114/ concern,.-

Beit known that l, ALF 'inn SWAN, a sul ject of theQueen of Great ritain and Ireland, and residing at Low Fell Works. Gatesheadprovemen'ts in Holders for Incandescent Elec` trie Lamps, in part applicable also to otliei` Vanalogous purposes, (for which Iliave made application for patents in Great Britain, No, 1o 9, 1`85,dated J" une 19, 1884; France, dated November v-14, 18845 Belgium, dated November 17,1884; Italy, dated November 14, 1884, and Austria, dated November 14, 1884,) of which the following isa specification.l j'

My invention. has l'or its object to enable incandescent electric-lamp holders t'o be made of an insulating material capable of lbeing molded orcast-sucli as glass-thc inetal littings being so formed at the parts which are to be inclosed in the glass or the like that they will be secured in the glass or other insulating material by the process ot' moldingr or casting.

I will describe, with reierence to the aceoinpanyingdrawings` a inannei in which the invention may -be carried into cffelct. Figure- 1 shows the upper part of the holder iii'i'ertical sections and in plan.4 Fig. 2 showsthe lower part of the holder in vertical 'section and plan. Fig. 3 is adetail view of the spring-contact; Fig. 4, a perspective view of theinclosingsleevcg and Fig. 5 a vertical section of the ventiredevice.- i

The-part to be secured to the bulb is shown at lii'g.y 1, in plan and transverse sections, at 'right angles to each other, and consists of a bodypart, A, of glass or other insulating material, capable oi' being molded or cast. The metal fittings b b are l'orn'ied with ear-pieces b2 b",fand .are placed in the mold for .thepart ,A, 4a|nd ont-lie glass or like material heilig pressed or 'cast in the mold the said metalV parts .b b are secured firmly in position in the part A.

'.Lhe part C, to which the main Wires are connected, and which is secured t the'bracket 0,1' the like, is similarlyl lin-ined 5by casting or molding the glass or like material around the metal fittings, consisting ol'asilrew-collar, e, for securing to the bracket or the like, and

Wires hh are secured byscrewl-nuts g2, provided with springs y, the other ends ot' which form orare provided with contact-pieeesto press against the wires r from `the lainp, orthe contact pieces b, to which they are Joined. 5 5

Fig. 3 shows one ot' these nuts and springs separately.

The fittings d d and c are provided at the parts where they are surrounded by the glass or the like with proiectious or grooves, by 6o which they are held Iirnily in position.

The parts A and() may be securedtogether, and the bulb eonsequentl y be secured in place, by a collar piece, F. slid or spi-innig upon the part C, and prevented l'roin turning by a. 6,-, recess or recesses in the collar F taking over a projection or over projections at the side of the piece C, to keep the parts in the proper relative position, the part A being` secured by the knobs a thereon engaging in bayonel'.- 7o joint groovesfin the collar F. Figa shows the collar F separately, and Fig. 5 shows the parts ittcd to a lamp. the part. A being eonnected or otherwise fixed to the bulb of the lamp.

o The proiections or grooves on thc parts of -the ittings surrounded by the. glass or the like may be of any-kind which will serve to secure the fittings in position in the glass or the like. SQ

l do not limit inysell' to any particular shape ot' the body part ol" the holder` or shape` or number ot the parts constituting the bodypart of the holder; nor do l limit myself to any particular shape or number ol thc fittings, 8 5

y nor to the details ofthe liitiugs, as shown in the drawings; but

What l claini as my invention is-- 1. ln a holder for incandescent electric lamps having a socket of glass or similar in- 9o sulating inoldable or east-able material with metal fittings or contact-phites embedded directly therein, and having projections extending into the mass ot' the glass or other insulating material, substantially :is dcseributfl.

2. A holder for incandescent', clcci ric lamps, comprising a part ot' glass or like. molt'lablc or castable insulating material.l having split screws partly embedded therein, -lhe ina-in wires being held in said screws by scrtiwdinls, roo substantially as described.

3. In a holder for incandescent electric lamps, the combination of the' lart' t;

1i -e material,with split screw f ilrtlly ded therein, the screw-nuts f hold` g the main wires in said screws, and the springs connected with screw nuts and for ing or provided with contacts for eomlecti gwith the 1eadin0-in wires,substantial1yas described.

4. L. 12e-.der for incandescent eiectriclamps, comprising a part orsoeket, a, material, having rectl y therein,

the main wires are led, formemlrl,I of

contact-plates embedded dia part, C, of like material having split screws partly embedded therein, screw-nuts for engagement with said screws, making1 connection contact-plates, both being,` supported in a tube or substantially as described.

and spring contacts for between said screws and parts a and C collar,

0f glass or like which l 5. A holder forincandescent electric lamps,

comprising a socket, a., of glass or like material, provided with contact-plates embedded therein, a part, C, also of glass or like material, provided with screws for the main wires,

connecting said screws and a tube or collar in which a and C are .supported by a 25 i It is hereby certified that in Letters Patent No. 313,965, granted March 17 1885,

y upon the application of Alfred Swan, of Low Feil Works, Gatesheadon-Tync, England,

for an improvement in Holders for Incandescent Electric La1nps,7 an error appears in the printed specification requiring the following correction: In line 90, page 1, the

`Word having should be stricken out; and that the said Letters Patent should be read with this correction therein that the same may conform to the corrected les pertaining to the casein the Patent Office.

Signed, countersigncd, and sealed this 22d day of September, A, l). 1885.

[SEAL] H. L. MULDROW, Acting Secretary of the Interior.

Countersigned:

M. V. MONTGOMERY,

Commissioner of Patents. 

